The value to set the weblet to. If the weblet visualizes a field, this will identify the field whose value is to be shown. The checked state of the weblet is determined by comparing the value with the trueValue property.
No default value applies – for most uses of this weblet you must specify a field whose value is to be represented by the checkbox. Any value that does not match the trueValue property is treated as false.
A string value or the name of a field, system variable or multilingual text variable.